Valve.



Patented Oct. 3|, I899. J. G. EWING.

No. 635,76l.

V A L V E (Application filed. July 14, 1699.

(No Model.)

1 4 Jllfe geyi 6% d I illvrrnn 'rrns ATENT hhlhle JOSEPH G. EW ING, OFMCDONALD, PENNSYLVANIA, ASSIGNOR OE ONE-HALF TO ROBERT F. WALLACE, OFSAME PLACE.

VALVE.

SPECIFICATION formingpart of Letters Patent No. 635,761, dated October31, 1899.

Application filed July 14, 1899.

T ctZZ whom iv may concern:

Be it known that I, Josnrn G. EWING, a citizen of the United States,residing at Mc- Donald, in the county of WVashington and State ofPennsylvania, have invented a new and useful Valve, of which thefollowing is a specification.

This invention relates to automatically-operating valves for applicationto oil-cans, coffee and tea pots, and other containing-receptacles; andthe object of the same is to admit air to the interior of the can, pot,or receptacle body whenever the liquid therein is withdrawn therefromand assist in giving the proper amount of veutage, and therebyfacilitate pouringliquids from inclosed receptacles within the fullcapacity of a spout or other delivering element, and, furthermore, topreserve certain desirable qualities in different liquids or substancesby excluding the air from entrance to the receptacle containing the samewhile in a position of rest through the automatic closing action of thevalve.

The invention consists of the construction and arrangement of theseveral parts, which will be more fully hereinafter described andclaimed.

In the accompanying drawings, Figure 1 is a perspective view of anoil-can, showing the improved valve attachment applied thereto. Fig. 2is a transverse vertical section of the valve attachment on a largerscale. Fig. 3 is a horizontal section through the upper part of thevalve attachment.

Similar numerals of reference are employed to indicate correspondingparts in the several views.

The improved valve attachment is shown applied to an oil-can toillustrate one form of application; but it will be understood that it isintended to be used and may be applied in connection with coffee and teapots or any receptacle supplied with a cover or lid and from which thecontents are adapted to be poured through a spout or delivering elementand requiring air-ventage to facilitate the said pouring operation. Indescribing the valve the essential elements will therefore be understoodas being equally Well adapted for similar purposes in other devices,vandthat such changes as are necessary to prop- Serial No. 723,858. Nomodel.)

erly attach the parts to different forms of lids or covers will be madeas reside within the scope of the invention.

The numeral 1 designates the body of a containing-receptacle-in thisinstance represented as an oil-can'having a pouring-spout- 2 and aremovable cap or cover 3. As common in this form of receptacle, the capor cover 3 has a lower flange 4, constructed with a series of spiralcorrugations 5 to coincide with and relatively fit corresponding threadsor corrugations on the neck of the can-body or surrounding collar forthe filling-opening of such receptacle.

As clearly shown in Fig. 2, the upper part .of the cap or cover 3 has anair-chamber 6 formed therein by positioning a horizontal partition 7 ata distance below the top 8 of the said cap or cover. The center of thesaid partition 7 is formed with a depressed valve-seat 9,thr0ugh thecenter ofiwhich is an opening 10, the said opening being at the lowestpoint of the depression. Surrounding the depressed seat 9 is anupstanding guard-flange 11, and in the top 8 of the cap or cover, overthe central portion of the flange ll'and preferably in line With theopening 19, is a feed-aperture 12. On the seat 9 a ball-valve 13 hasfree movement and is formed of a yielding substance, such as rubber, toavoid rattling or noise during its operation and also more effectuallyserve its intended purpose. The space 14 between the upper edge of theguard-flange 11 and the adjacent'portion of the top 8 is considerablyless in vertical extent than the diameter of the ball-valve 13, andconsequently it is therefore impossible for the said valve, to becomedisengaged or fall without the confines of the said flange 11. This is avery advantageous 9o arrangement in view of the fact that the cap orcover can be turned or arranged in any angle without obstructing theoperation of the valve or disarrangin g the same, and a proper returnthereof to the seat 9 is at all times assured.

By providingthe air-chamber 6 a steady feed of air through the opening10 in the valveseat 9 will ensue, and as the unoccupied space within thecan body or receptacle becomes :00 greater as the contents are withdrawnthe inflow of the air through the opening 10 will be greater and inproportion to the increase of dimension of the said space. Hence thecontents of the chamber 6 form an excess supply proportionately to theamount of air that can pass through the opening 10 within a given time,and this excess supply is continuously replenished by the inflow of airto the said chamber through the feed-aperture 12 in the top 8. By thisregularity in'the i11- flow of ventage-a-ir the withdrawal of thecontents of the receptacle through a spout or other analogouselementwill be steady and without fluctuation and the formation of avacuum within the said receptacle is prevented.

In operation as the receptacle or can-body, as the case may be, istilted to one side for the purpose of pouring the contents thereofthrough a spout or other device the ball-valve 13 rolls on its seat anduncovers the opening 10. As long as the can-body or receptacle is heldat an angle for pouring purposes the said ball-valve will remainunseated; but as soon as the receptacle is restored to normal positionthe said valve will rollback over its seat and cover the said opening10.

\Vhen the improved device is used on the lid or cover of a tea or coffeepot, the valve will prevent the escape of the aroma and other substancesfrom the decoctions when the receptacles or pots are in positions ofrest. The use of a rubber balLvalve is preferred, because it is lessaffected by different substances and has longer wearing qualities, andto accommodate different applications the parts, including, essentially,the partition 7, flange 11, and ball 13, together with the surroundinginclosure to complete the chamber 6, may be varied in proportions, size,or minor details of construction without departing from the spirit orsacrificing any of the advantages of the invention.

I'Iavingthus described the invention, what is claimed as new is- In adevice of the character set forth, the combination of an air-chambercomprising a lower portion in the form of a partition or bottom, havinga depression with an opening therethrough, the said chamber beingcompletely inclosed, above the partition or bottom and provided with anopening in the upper portion of the inclosure, a guard-flangesurrounding the said seat and free of contact with the surrounding wallof the air-chamber, and a ball-valve movably bearing upon the seat, thedistance between the upper edge of the guard-flange and the adjacent topportion of the inclosure being less than the diameter of the ball-valveto prevent the ball from be ing inoperatively dislodged from the seat.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JOSEPH G. EWING.

Witnesses:

A. VALENTOUR, L. LEHLY.

